{"schemaVersion":"jobsearcher.job.v1","id":"87816971be4ac8f5809c2da4","url":"https://jobsearcher.com/jobs/87816971be4ac8f5809c2da4","canonicalUrl":"https://jobsearcher.com/jobs/87816971be4ac8f5809c2da4","title":"Mid-Level Java API Developer","description":"Job Title: Mid- Level Java API Developer\nLocation: Pittsburgh, PA\nType: Permanent Full Time\nWork Model: Onsite\n\nResponsibilities\n\nDesign, develop, maintain, and implement APIs, microservices, and backend components.\nCollaborate with development teams to build and enhance API features at scale.\nImprove API standards, performance, and service quality.\nDevelop and unit test Java-based RESTful services that integrate with external systems.\nUtilize DevOps tools including Jenkins, uDeploy, Git, and CI/CD pipelines.\nReview technical design documents and provide feedback on solutions, estimates, and implementation approaches.\nCreate technical designs for new applications and enhancements to existing systems.\nTranslate business and functional requirements into scalable system designs.\nPrioritize work effectively and meet project deadlines.\nCollaborate closely with business stakeholders, architects, developers, and external partners.\nResearch and recommend frameworks, libraries, and tools to streamline development efforts.\nParticipate in Agile development processes and code reviews.\n\nRequirements\n\n4+ years of experience in Java/J2EE development.\nStrong experience with REST APIs, Spring Boot, Spring Framework, XML, JSON, and Swagger/OpenAPI.\n4+ years of experience developing and consuming SOAP and REST web services in production environments.\nExperience building APIs and microservices in large-scale enterprise environments.\nExperience with OpenShift, containerization, and microservices architecture.\n3+ years of experience using GitHub, Jenkins, and CI/CD tools.\nKnowledge of front-end technologies such as Node.js and Angular (version 8+ preferred).\nExperience with Kubernetes, Apache Kafka, and MongoDB.\nExperience integrating Java applications with Oracle and/or SQL Server databases.\nHands-on experience developing secure REST APIs and implementing application security best practices.\nStrong understanding of software development lifecycle methodologies and Agile practices.\nExcellent collaboration, communication, and problem-solving skills.\nStrong verbal and written communication skills.\nPreferred Skills\n\nEnterprise application development experience.\nExperience working in highly regulated or large-scale environments.\nStrong troubleshooting and performance optimization capabilities.\nExposure to cloud-native technologies and modern application architecture patterns.\n\nSystem One, and its subsidiaries including Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.\n\nSystem One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.\n\n#LI-\nRef: #404-IT Pittsburgh","company":"Systemone","rawCompany":"systemone","city":"Pittsburgh","state":"PA","isRemote":false,"isActive":false,"createdAt":"2026-11-05T09:19:08.495Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Mid-Level Java API Developer","description":"Job Title: Mid- Level Java API Developer\nLocation: Pittsburgh, PA\nType: Permanent Full Time\nWork Model: Onsite\n\nResponsibilities\n\nDesign, develop, maintain, and implement APIs, microservices, and backend components.\nCollaborate with development teams to build and enhance API features at scale.\nImprove API standards, performance, and service quality.\nDevelop and unit test Java-based RESTful services that integrate with external systems.\nUtilize DevOps tools including Jenkins, uDeploy, Git, and CI/CD pipelines.\nReview technical design documents and provide feedback on solutions, estimates, and implementation approaches.\nCreate technical designs for new applications and enhancements to existing systems.\nTranslate business and functional requirements into scalable system designs.\nPrioritize work effectively and meet project deadlines.\nCollaborate closely with business stakeholders, architects, developers, and external partners.\nResearch and recommend frameworks, libraries, and tools to streamline development efforts.\nParticipate in Agile development processes and code reviews.\n\nRequirements\n\n4+ years of experience in Java/J2EE development.\nStrong experience with REST APIs, Spring Boot, Spring Framework, XML, JSON, and Swagger/OpenAPI.\n4+ years of experience developing and consuming SOAP and REST web services in production environments.\nExperience building APIs and microservices in large-scale enterprise environments.\nExperience with OpenShift, containerization, and microservices architecture.\n3+ years of experience using GitHub, Jenkins, and CI/CD tools.\nKnowledge of front-end technologies such as Node.js and Angular (version 8+ preferred).\nExperience with Kubernetes, Apache Kafka, and MongoDB.\nExperience integrating Java applications with Oracle and/or SQL Server databases.\nHands-on experience developing secure REST APIs and implementing application security best practices.\nStrong understanding of software development lifecycle methodologies and Agile practices.\nExcellent collaboration, communication, and problem-solving skills.\nStrong verbal and written communication skills.\nPreferred Skills\n\nEnterprise application development experience.\nExperience working in highly regulated or large-scale environments.\nStrong troubleshooting and performance optimization capabilities.\nExposure to cloud-native technologies and modern application architecture patterns.\n\nSystem One, and its subsidiaries including Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.\n\nSystem One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.\n\n#LI-\nRef: #404-IT Pittsburgh","datePosted":"2026-11-05T09:19:08.495Z","dateModified":"2026-11-05T09:19:08.495Z","hiringOrganization":{"@type":"Organization","name":"Systemone","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Pittsburgh","addressRegion":"PA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"87816971be4ac8f5809c2da4"},"url":"https://jobsearcher.com/jobs/87816971be4ac8f5809c2da4"}}